2531139 has 8 divisors (see below), whose sum is σ = 3634512. Its totient is φ = 1557600.

The previous prime is 2531117. The next prime is 2531167. The reversal of 2531139 is 9311352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2531139 - 2⁵ = 2531107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2531189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32412 + ... + 32489.

It is an arithmetic number, because the mean of its divisors is an integer number (454314).

2^2531139 is an apocalyptic number.

2531139 is a deficient number, since it is larger than the sum of its proper divisors (1103373).

2531139 is a wasteful number, since it uses less digits than its factorization.

2531139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64917.

The product of its digits is 810, while the sum is 24.

The square root of 2531139 is about 1590.9553733528. The cubic root of 2531139 is about 136.2820523307.

The spelling of 2531139 in words is "two million, five hundred thirty-one thousand, one hundred thirty-nine".